San Borja in Spring
In spring (September, October and November), San Borja sees average daytime highs around 32°C and overnight lows near 22°C, with 508 mm of rain over about 48 wet days across the season. It is the warmest season of the year and the 2nd-wettest season.
Across spring, daytime highs hold fairly steady around 32°C. The sky is clear or mostly clear about 19% of the time across spring, and the air most often feels oppressive.
Spring is San Borja's 3rd-best season to visit on our travel score. For the whole year in context, see San Borja's year-round climate.
- Avg daytime high
- 32°C
- warmest season of the year
- Avg overnight low
- 22°C
- Rainfall
- 508 mm
- 48 wet days
- Avg wind
- 8 km/h
- Travel score
- 3.2
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in San Borja in Spring
Across spring, daytime highs hold fairly steady around 32°C.
A typical spring day in San Borja reaches about 32°C and drops to 22°C overnight. The warmest of the three months is September, the coolest September.
How spring really feels in San Borja
Once humidity and wind are folded in, spring brings about 91 days that feel above 32°C and 0 that feel at or below 0°C.
The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
San Borja weather by month
How the three spring months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 31° / 23° | 348 | 27.1 | 12.8 | 2.7 |
| Feb | 31° / 23° | 303 | 23.3 | 12.5 | 2.9 |
| Mar | 31° / 23° | 265 | 24 | 12.1 | 3.0 |
| Apr | 30° / 22° | 154 | 16.7 | 11.7 | 3.9 |
| May | 29° / 20° | 86 | 11.3 | 11.3 | 5.5 |
| Jun | 28° / 19° | 57 | 7.6 | 11.1 | 6.5 |
| Jul | 28° / 18° | 49 | 6.2 | 11.2 | 6.5 |
| Aug | 31° / 19° | 60 | 7 | 11.5 | 4.9 |
| Sep | 33° / 21° | 118 | 10.8 | 11.9 | 3.6 |
| Oct | 33° / 23° | 178 | 17.6 | 12.3 | 3.0 |
| Nov | 32° / 23° | 212 | 19.4 | 12.7 | 3.0 |
| Dec | 31° / 23° | 294 | 24.6 | 12.9 | 2.8 |
Cloud cover in Spring
The sky is clear or mostly clear about 19% of the time across spring.
Chance of precipitation in Spring
San Borja gets around 508 mm of rain over 48 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 8 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 42 min in early September to 12 h 48 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 5.4 kWh/m².
Hazard calendar for San Borja
In spring, San Borja overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
San Borja's rainy season runs October–March, when most of the year's rain falls.
Is spring a good time to visit San Borja?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a weaker month for outdoor sightseeing in San Borja.
What to pack for San Borja in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, San Borja sees daytime highs around 32°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 48 days see rain.
UV index in San Borja in Spring
Clear-sky midday UV across spring averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in San Borja peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 11 at about 8 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 16 | 15 | 14 | 11 | 9 | 8 | 8 | 8 | 8 | 12 | 14 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 16 | Extreme |
| Feb | 15 | Extreme |
| Mar | 14 | Extreme |
| Apr | 11 | Extreme |
| May | 9 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 8 | Very high |
| Sep | 8 | Very high |
| Oct | 12 | Extreme |
| Nov | 14 | Extreme |
| Dec | 13 | Extreme |
Air quality in San Borja in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in San Borja is worst in September — around 50 µg/m³ PM2.5 (poor), about 6.4× the cleanest month (May, 8 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 11 | 12 | 11 | 9 | 8 | 8 | 11 | 22 | 50 | 50 | 27 | 11 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Poor | Poor | Moderate | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 12 | Good |
| Mar | 11 | Good |
| Apr | 9 | Good |
| May | 8 | Good |
| Jun | 8 | Good |
| Jul | 11 | Good |
| Aug | 22 | Moderate |
| Sep | 50 | Poor |
| Oct | 50 | Poor |
| Nov | 27 | Moderate |
| Dec | 11 | Good |
Where is San Borja?
San Borja sits at 14.9°S, 66.7°W, 195 m above sea level, in Bolivia. The nearest listed city is Caranavi, 140 km away.
Topography around San Borja
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Borja.
Within 3 km, the terrain around San Borja has only modest variations in elevation — a maximum elevation change of 21 m around an average of 194 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 44 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,527 m.
The land around San Borja is covered by grassland (61%) and trees (28%) within 3 km, grassland (63%) and trees (30%) within 16 km, and trees (75%) and grassland (23%) within 80 km.
Bolivia travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B / C
- 230 V · 50 Hz
- Prices
- ≈ 40% of US
- price level, 2025
- GDP per capita
- $5,148
- 2025
- Happiness
- 5.8 / 10
- World Happiness, 2025
- Homicide rate
- 4.4
- per 100k, 2023
- Road deaths
- 21.1
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Moderate
- EF EPI 521
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for San Borja (-14.852°, -66.7495°, elevation 195 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.